A New Species of Hypomasticus from Eastern Brazil Based on Morphological and Molecular Data (Characiformes, Anostomidae)

Autor(es)

Birindelli, Jose L. O. ^[1] ; Melo, Bruno F. ^[2] ; Ribeiro-Silva, Luis R. ^[2] ; Diniz, Debora ^[3] ; Oliveira, Claudio ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Londrina, Dept Biol Anim & Vegetal, Museu Zool, Caixa Postal 10011, BR-86057970 Londrina, Parana - Brazil

^[2] Univ Estadual Paulista, Inst Biociencias, Dept Biol Estrutural & Func, R Prof Dr Antonio CW Zanin 250, BR-18618689 Botucatu, SP - Brazil

^[3] Univ Estadual Sudoeste Bahia, Dept Ciencias Biol, R Jose Moreira Sobrinho S-N, BR-45208091 Jequie, BA - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Copeia; v. 108, n. 2, p. 416-425, JUL 2020.
• Citações Web of Science: 0

Resumo

A new species of Hypomasticus is described from the Rio de Contas, a coastal drainage of eastern Brazil, and its phylogenetic position is proposed based on molecular data. The new species is diagnosed among Anostomidae by possessing a downturned mouth with compressed teeth arranged side by side, 37 or 38 lateral-line scales, three scale series between the dorsal-fin origin and the lateral line and between the lateral line and the pelvic-fin origin, and 12 scale rows around the caudal peduncle. Mitochondrial DNA sequences provide evidence that the new species is closely related to H. mormyrops, H. thayeri, H. copelandii, and H. steindachneri, a clade of species endemic to coastal drainages of eastern Brazil. These results combined with a previous phylogeny support the reallocation of the latter two species from Leporinus to Hypomasticus. The new species is herein considered to be Endangered under the IUCN criteria, due to a small Extent of Occurrence, severely fragmented population, and continued decline of area, extent, and quality of habitat. (AU)

• Processo FAPESP: 16/11313-8 - Filogenia da Ordem Characiformes (Teleostei: Ostariophysi) utilizando elementos ultraconservados
• Beneficiário: Bruno Francelino de Melo
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 10/51250-9 - Relações filogenéticas do gênero Leporinus Agassiz (Ostarophysi, Characiformes, Anostomidae)
• Beneficiário: José Luís Olivan Birindelli
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 14/26508-3 - Filogenia da hiperdiversa ordem Characiformes (Teleostei: Ostariophysi) utilizando elementos ultraconservados
• Beneficiário: Claudio de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Temático